Q. I've heard all kinds of numbers thrown around when it comes to how much a couple needs in retirement. What's the truth?
See also: AARP retirement calculator.
A. It's different for everyone. You've got to sit down in advance and estimate as best as you can how much you'll need to live comfortably in retirement, taking into account your age when you stop working, costs of the lifestyle you foresee, your Social Security benefit and other factors. You can do this on your own or with guidance from a financial planning professional.